LECTURE NOTES Flashcards
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PRECAMBRIAN ERA TIME BEGINNING AND ENDING
13.7 bya-570mya
PRECAMBRIAN ERA IMPORTANT EVENT AT 13.7bya
big bang occurs
PRE CAMBRIAN ERA IMPORTANT EVENT AT 4.5bya
earth forms
PRE CAMBRIAN ERA IMPORTANT EVENT AT 3.5bya
life beings in oceans
PRECAMBRIAN ERA IMPORTANT EVENT AT 3.2 bya
first life forms (fossils) of prokaryotes
Where were two sources of precambrian life found?
FIG TREE ROCK (S.AFRICA) and WESTERN AUSTRALIA
IMPORTANT EVENT IN PRECAMBRIAN ERA at 2.5 billion years ago?
multicellular life present
PALEOZOIC ERA TIME SPAN
570mya-280mya
PALEOZOIC ERA- CAMBRIAN START-
570mya
PALEOZOIC ERA- ORDOVICIAN START-
500 mya
PALEOZOIC PERIOD SILURIAN START-
430 mya
PALEOZOIC PERIOD DEVONIAN START
395 mya
PALEOZOIC PERIOD CARBONIFEROUS START
345mya
PALEOZOIC PERIOD PERMIAN ERA START
280mya
MEZOZOIC PERIOD TRIASSIC START
225mya
MEZOZOIC PERIOD JURASSIC START
190mya
MEZOZOIC PERIOD CRETACIOUS TIME
136mya
CENOZOIC PERIOD TERTIARY START
65mya
CENOZOIC PERIOD QUARTERNARY START
1.8mya
CENOZOIC TERTIARARY PLIOCENE EPOCH START
5mya
TERTIARY MIOCENE EPOCH START
23mya
TERTIARY OLIGOCENE EPOCH START
34mya
TERTIARY EOCENE EPOCH START
55mya
TERTIARY PALEOCENE EPOCH START
65mya